Hi there, On Wed, 29 May 2002 18:55:05 EDT, [EMAIL PROTECTED] wrote:
> Bought an AF 1.7x converter some months ago -- used, without an instruction > manual. I notice that sometimes it just won't AF. (I generally use it with a > fast 50, so it's not the speed). Is this a known weakness of this device? or > is there something in the instructions that I should know about, to stop this > from happening? Hmmm. I've used mine quite a few times and haven't seen any complete failures. I've had cases where it didn't want to AF lock, but I was using it on an SMC-A 200/4, so that's not surprising. With my SMC-A 50/1.4 and Tamron SP 90/2.5 it works just dandy. Could you give a bit more explanation of the failure? 1) How often is "sometimes"? 2) Do you mean that it won't acquire AF lock, or that it doesn't even seem to try to AF before giving up or what? 3) If it doesn't even seem to try to AF, do you feel any vibrations or anything that would indicate the camera body is trying to spin the AF motor but the movement isn't going through? 4) Have you cleaned all of the contacts on both sides of the 1.7X AF T/C? If one of them "drops out" occasionally, the camera might it's got an MF lens rather than an AF one. TTYL, DougF KG4LMZ - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
